Specifications

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BOSS ARC 140VRD、160VRD Operating Manual
4.01 Stick welding
l Connect work lead to negative terminal.
l Connect electrode lead to positive terminal.
l Switch machine on.
l Set welding current control (see table 5).
Workpiece thickness mm 0.5-2.0 2.0-5.0 5.0-7.0
Electrode diameter mm 1.0-2.0 2.0-3.2 3.2-4.0
Welding current（A） 10-50 50-150 150-250
Table 5
4.02 DC TIG welding
l Connect work lead to positive terminal.
l Connect TIG torch to negative terminal.
l Switch machine on.
l Set welding current control (see table 6).
l Use TIG torch with value control.
Workpiece
thickness (mm)
Tungsten
diameter (mm)
Welding current
(A)
Filler wire
diameter (mm)
Argon Gas flow
(L/min)
0.3-0.5 1-1.6 5-30 3-8
0.5-1.2 1.6-2 10-50 1.2-1.6 4-8
1.2-2 1.6-2 10-50 1.2-1.6 4-8
1.2-2 1.6-2 30-70 1.6-2.0 6-9
2-4 2-4 60-100 1.6-2.0 7-10
4-6 3-4 100-200 2.0-2.5 1-15
Table 6